/*
    This file is part of Sylvan.
    Copyright (C) 2008-2018 Cute Chess authors
    Copyright (C) 2019 Wilbert Lee

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Sylvan.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <QAbstractItemModel>
#include "stringvalidator.h"

StringValidator::StringValidator(QObject* parent)
    : QValidator(parent),
      m_model(nullptr)
{
}

void StringValidator::setModel(const QAbstractItemModel* model)
{
    m_model = model;
    m_startIndex = model->index(0, 0);
}

void StringValidator::setStartIndex(const QModelIndex& index)
{
    m_startIndex = index;
}

QValidator::State StringValidator::validate(QString& input, int& pos) const
{
    Q_UNUSED(pos);

    if (m_model == nullptr || m_model->rowCount() == 0)
        return Acceptable;

    if (input.isEmpty())
        return Intermediate;

    if (!m_model->match(m_startIndex, Qt::EditRole, input, 1,
                        Qt::MatchFlags(Qt::MatchFixedString | Qt::MatchWrap)).isEmpty())
        return Acceptable;

    if (!m_model->match(m_startIndex, Qt::EditRole, input, 1,
                        Qt::MatchFlags(Qt::MatchStartsWith | Qt::MatchWrap)).isEmpty())
        return Intermediate;

    return Invalid;
}
